Operation Manual

BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM
TRANSAXLE
•
Relief (Reverse)
2)
(1
.
:
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• •••••
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~~:
.... ~
,,:X III:Y
:Z
3TAAAAFKP006A
(1) Cylinder Block (Pump)
(7) High Pressure Relief Port (13) Power Steering Controller
A: A Port
(2) Swash plate
Plug (Forward)
(14) Hydraulic Pump
B: B Port
(3) Piston
(8) Charge Relief Valve
(15) Flow Priority Valve (Hydraulic
C: C Port
(4) Cylinder Block (Motor)
(9) High Pressure Relief Port
Control Valve)
D: D Port
(5) Check and High Pressure
Plug (Reverse)
(16) Position Control Valve
X: High Pressure
Relief Valve (Forward)
(10) PTO Clutch Valve
(17) Oil Strainer
Y: Low Pressure
(6) Check and High Pressure
(11) PTO Relief Valve
(18) Transmission Case
Z: Free 011
Relief Valve (Reverse)
(12) Oil Filter Cartridge
When the speed control pedal is in reverse, the variable swashplate is tilted as shown in figure above.
As the pump cylinder block rotates with the input shaft, oil is forced out of pump port A at high pressure. As
pressure oil enters motor port C, the pistons, which align with port C, are pushed against the swash plate and slide
down the inclined surface. Since the oil pressure
in the check and high pressure relief valve (Reverse) increase, the
high oil pressure opens the check and high pressure relief valve (Reverse) and the flows through the charge relief
valve to the transmission case.
Then the output shaft rotates with the motor cylinder block. This drives the machine rearward and the angle
of
pump swash plate determines the output shaft speed.
As the motor cylinder block continues to rotate, oil
is forced out of motor port 0 at low pressure and returns to the
pump.
2-M?